<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>
        .box{
            width: 300px;
            height: 120px;
            border: 2px dashed violet;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
        }
        .box div{
            width: 60px;
            height: 60px;
            border: 4px solid skyblue;
            box-sizing: border-box;
            display: flex;
        }
        div img{
            width: 36px;
            height: 36px;
            margin: auto;
        }
    </style>
</head>
<body>
    <div class="box">
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
        <div ><img src="images/windmill.png" alt=""></div>
    </div>
</body>
</html>